Definition of pleurembolic in US English:

pleurembolic

adjective

Zoology
  • Of an eversible organ, as the proboscis of a gastropod mollusc: withdrawn from the everted position by muscles attached to its sides rather than its tip (so that the tip is the last part to be introverted).

Origin

Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. From pleuro- + embolic.